TY - RPRT TI - Spacetime pq theory for AC and DC electric power systems AU - Peng, Fang Z. [University of Pittsburgh, PA (United States)] AU - Huang, Hao [University of Houston, TX (United States)] AU - Tolbert, Leon M. [The University of Tennessee, Knoxville, TN (United States)] AU - Lehman, Brad [Northeastern University, Boston, MA (United States)] AU - Li, YuAnn [University of Pittsburgh, PA (United States)] PY - 2025 DO - 10.1038/s41598-025-90021-3 UR - https://www.osti.gov/biblio/2999023 ID - 2999023 ER -